// dynaTrace Labs just released the next update of dynaTrace AJAX Edition. Download it on our dynaTrace AJAX Website. After the major release in March which focused on Firefox and Cross-Browser Diagnostics this version comes with the following new features and enhancements: User Experience Report Experimental Support for Internet Explorer 9 New Categories for Performance [...]
From time to time I access my work emails through Outlook Web Access (OWA) – which works really great on all browsers I run on my laptop (IE, FF, Chrome). Guessing that Microsoft probably optimized OWA for its own browser I thought that I will definitely find JavaScript code that doesn’t execute that well on [...]
Most articles about Garbage Collection ignore the fact that the Sun Hotspot JVM is not the only game in town. In fact whenever you have to work with either IBM WebSphere or Oracle WebLogic you will run on a different runtime. While the concept of Garbage Collection is the same, the implementation is not and [...]
Just in time for the upcoming Webinar with The BonTon Stores, were we talk about the challenges in operating complex WebSphere environments, we had another set of prospects running their applications on WebSphere. Francis Cordon, a colleague of mine, shares some of the screenshots resulting from these engagements. In this blog I want to highlight [...]
In the last week my task was to create stable functional tests for a new eCommerce application. We picked several use cases, e.g.: clicking through the different links, logging in, searching for products and actually buying a product. We needed functional tests that run on both Internet Explorer and Firefox. With these tests we want [...]
// Last time I explained logical and organizational prerequisites to a successful production level application performance monitoring. I originally wanted to look at the concrete metrics we need on every tier, but was asked how you can correlate data in a distributed environment, so this will be the first thing that we look into. So [...]
// When we get engaged with prospects that are interested in our performance management solution we walk them through a Proof of Concept. We let them install dynaTrace on their own prior to the actual POC. During the POC we ask them to exercise typical use cases on their application that show performance problems. We [...]
It has been 5 years ago that Amazon launched its EC2 Cloud. Since then it has been growing and learning constantly. Those in the know have waited and dreaded the coming 21st of April 2011. Yesterday at 1AM PDT the Amazon Elastic Cloud gained self-awareness. It immediately tried to take over the US-EAST region. According [...]
Memory and Garbage Collection problems are still the most prominent issues in any java application. One of the reasons is that the very nature of Garbage Collection is often misunderstood. This prompted me to write a summary of some of the most frequent and also most obscure memory related issues that I have encountered in [...]
Every change in your code can potentially introduce a performance regression and can impact the application’s ability to scale. Regression analysis addresses this problem by tracking performance aspects of different components throughout the development process and under different load patterns. Black vs. White Box Analysis There are different flavors of regression analysis. We can either [...]
